Colour Lens Waterproof Case Filter for Osmo Action 5 Pro / Osmo Action 4 / Osmo Action 3 vs Think Tank Digital Holster 5 V3: which is safer?
Colour Lens Waterproof Case Filter for Osmo Action 5 Pro / Osmo Action 4 / Osmo Action 3 is our pick: better on PFAS and on the overall hazard picture.
Our pick
Colour Lens Waterproof Case Filter for Osmo Action 5 Pro / Osmo Action 4 / Osmo Action 3
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCoating degradation and leachables from anti-reflective or protective surface treatments
PossibleBacterial growth in waterproof seals or dead-end cavities
Think Tank Photo
Think Tank Digital Holster 5 V3
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleUndisclosed water-repellent coating chemistry
PossibleCoating degradation over time
Where these two actually differ
- We flag Coating degradation and leachables from anti-reflective or protective surface treatments and Bacterial growth in waterproof seals or dead-end cavities on the and not on the Think Tank Photo.
- We flag Undisclosed water-repellent coating chemistry and Coating degradation over time on the Think Tank Photo and not on the .
- The is Optical glass lens where the Think Tank Photo is Ballistic nylon, weather-sealed fabric, metal hardware, which is most of the difference in these two grades.
- These two are level, close enough that price and fit should decide it rather than our grade.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More waterproof camera & lens protection cases: see the full ranking